Appendix
Process Sequence Chart
Oil operation with pilot burner and flame monitor
M
3
5
5
6
9
2
7
3
7
1
7
2
7
5
7
7
8
4
6
7
4
8
6
8
5
8
2
8
3
8
4
8
8
8
9
9
2
9
0
9
3
9
1
8
7
1
132
x
x
t 1
3t
t 4
5t
t 3
6t
7t
8t
9t
t 1
1
1
1
t
1
3
t
t 3
t 1
0
1
4
t
t 1
4
1
4
t
t 1
6
1
5
t
Version 4.0 8/99
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(
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(
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*
**
**
*
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a
l 7
is
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8
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.
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.7
c
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tw
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n
t
6
t
o
t
9
.
x
nd
t9 2 safety period 4 sec.****
t10 Operating phase any
t11 Control mode any
t13 Post-ventilation time 0-999 sec. adjustable
t14 Control elements at base load
t15 After-burning time 0-30 sec. adjustable
t16 Flame extinguishing check 5 sec.
t17 Leakage test, gas valve 2 30 sec.
*** Signal on terminal 1 clears the times t3, t4 and t5 at the end of t1 .
**** For determination of the total safety periods according
to the standards, you have to add the reaction time of the
flame monitor to the time settings of the FMS (typ.1sec.).
Any condition
t1 Wait for Gas safety interlock circuit
air pressure monitor min. scan any
t2 Time for pressure build-up in the
gas test line 2 sec.
(only with leakage test activated)
t3 Servo drive running time
t4 Re-circulation damper delay 0-t5
t5 Aeration time 30-999 sec. adjustable
t6 Pre-ignition time 2-40 sec. adjustable
st
t7 1 safety period 4 sec.****
t8 Stabilisation period 3-10 sec. adjustable
* If output regulator in the unit is activated, this signal
is linked with the internal burner-start of this regulator
** If the re-circulation signal is absent, re-circulation valves remain
closed or run closed. (except at pre-ventilation)..
